Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1988-09-29
1989-08-22
Levy, Stewart J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
G01R 3320
Patent
active
048599468
ABSTRACT:
A magnetic resonance imaging system includes a magnetic resonance exciting unit having an imaging mode which is executed such that a slicing gradient field and a high-frequency field are applied to an object placed in a uniform static field to excite a slice of the object, a read gradient field which is repeatedly switched is applied to the object, and a phase-encoding gradient field is applied to the object, thereby generating a series of echo signals, a data acquiring unit for sampling and acquiring the echo signals generated by the exciting unit, and an image forming unit for performing image reconstruction using sampling data obtained in the imaging mode of the exciting unit. The exciting unit also has an echo position detection mode which is executed such that the fields except for phase-encoded gradient field are applied to the object to excite the slice of the object in the same manner as in the imaging mode, and to generate a series of phase-nonencoded magnetic resonance echo signals. A peak position detector detects peak positions of the series of echo signals on the basis of an operation in the echo position detection mode of the exciting unit. A correcting unit substantially corrects generation timing errors of the echo signals in the imaging mode based on the peak positions.
REFERENCES:
patent: 4165479 (1979-08-01), Mansfield
patent: 4451788 (1984-05-01), Edelstein et al.
patent: 4625170 (1986-11-01), Yamamoto et al.
patent: 4644279 (1987-02-01), Hoshino et al.
patent: 4644473 (1987-02-01), Kojima et al.
patent: 4701709 (1987-10-01), Yamamoto et al.
patent: 4746865 (1988-05-01), Kasugai
Kabushiki Kaisha Toshiba
Levy Stewart J.
O'Shea Kevin D.
LandOfFree
Magnetic resonance imaging system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic resonance imaging system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic resonance imaging system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2418963